I think I remember something like this. Something like 7 days of hell or something like that... I could be way off but I remember kids playing the game at our local library around 2008/2009. And there was a lot of stickman flash games so. I'd go on the wayback machine if I were you, and check out past versions of some of the more popular flash game sites, Freeonlinegames.com, Mofunzone.com, Addicting games.com, and any others you might remember going to. That's how the names of a lot of flash games I couldn't find.